There's one guy that gets on my nerves and if I do I little mistake or error, he'll will start calling me names and even harass me in front of others. He will brag about how great of a man he is and how a worthless piece of trash I am. Jeez old man, if you don't like someone, just simply don't look at them in the face and get on with it!!! Should I start fighting back this old grump??